Actually eight US states (either all or part) used to belong to Mexico. Texas was the only one to become independent, then to join the Union. Texas claimed parts of present-day New Mexico, Oklahoma, Colorado and Wyoming. The territory making up all or part of the following states were ceded to the USA by the Treaty of Guadalupe Hidalgo, which ended the Mexican-American War in 1848: California, Arizona, Utah, Nevada, New Mexico, Colorado and Wyoming.
The Neuces Strip and the Mexican States of Alta California and Nuevo Mexico.
Canada, united states, and Mexico Canada, us. Mexico Canada, us. Mexico
Mexico borders the United States, but it is not a part of it. Three countries encompass North America: Mexico, the US, Canada.
Canada, Mexico, and Russia border the United States.
Mexico
Only two: southern Arizona and New Mexico, at the Gadsden Purchase (1853).
Canada United States Cuba
All of the land that the U.S. obtained between 1845 and 1853 came from Mexico.
Louisiana followed by New Mexico and then Mississippi.
Yes, of those three countries, the United States has the largest population, Mexico is second, and Canada is third.
It depends on the cities you are talking about. Mexico spans three timezones while the contiguous United States spans four.
All the land obtained from Mexico from this war was below the Mason-Dixon line. Abolitionists were fearful that some of this new territory would become slave states.